Power supply



FIG. 1 is a front perspective view of a power supply, showing my newdesign;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a left side elevational view thereof;

FIG. 9 is a front perspective view thereof, with the covers opened;

FIG. 10 is a front elevational view thereof, with the covers opened;

FIG. 11 is a top plan view thereof, with the covers opened; and,

FIG. 12 is a right side elevational view thereof, with the coversopened.

The broken lines shown in FIGS. 1-12 are for illustrative purposes onlyand form no part of the claimed design.

The ornamental design for a power supply, as shown and described.